[Docs] Fix typo

[daftano]

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[cbuescher]

Sure typo, thanks for the fix. LGTM.

[cbuescher]

@daftano would you mind singning the CLA, otherwise we cannot merge this, even though its only a small documentation typo fix.

[elasticmachine]

Pinging @elastic/es-docs

[daftano]

@cbuescher not a problem and already done

[jrodewig]

Thanks @daftano. @cbuescher I'll merge and backport this. Thanks!

[elasticmachine]

Pinging @elastic/es-core-features